Grease filter



FIG. 1 is a perspective view of a grease filter showing my new design;

FIG. 2 is a front elevational view thereof, the rear view being identical;

FIG. 3 is a top plan view thereof, the bottom view being identical;

FIG. 4 is a side elevational view thereof, the opposite side being identical;

FIG. 5 is a perspective view of a second embodiment thereof;

FIG. 6 is a front elevational view thereof, the rear view being identical;

FIG. 7 is a top plan view thereof, the bottom view being identical;

FIG. 8 is a side elevational view thereof, the opposite side being identical;

FIG. 9 is a perspective view of a third embodiment thereof;

FIG. 10 is a front elevational view thereof, the rear view being identical;

FIG. 11 is a top plan view thereof, the bottom view being identical; and,

FIG. 12 is a side elevational view thereof, the opposite side being identical;

The broken line drawings of a kitchen stove exhaust air hood in FIGS. 1, 5 and 9 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a grease filter, as shown and described. 